Automatic service pump



* A -G. c, DAvlsoN `AUTOMATIC SERVICE PUMP Filed March 2, 1926 2 Sheets-Shea?I 1 9 w a inih Y) ID. ||l| I ,/M... G M ,m m 4 o .l m e 2 6 2 f 2 9 7 2 f 4 0 J w J 3 t a@ a M .---nz l. e, J ...tra .116| llflrrlll J. 4 ,o 4 7 w o J 2. .3 d Mw M 2 6 w a G. C, DAVISON AUTOMATIC sERvIE PUMP Aug. 3l 1926.

Filed March 2, 1926 '2 sheets-sheet 2' atented ug. 31, 1926.

UNITED STATES GREGORY C. nAvIsoN, OE NEW LONDON, CONNECTICUT.

AUTOMATIC SERVICE PUMP.

i Application l-ed March 2, 1926. Seriall No. 91,798.

The present invention relates to dispensing apparatus, and more particularly to a'.

mechanism for automatically dispensing predetermined quantities of liquid upon the insertion of a ,coin of a .definite size or/ denomination.

An Object of the present invention is to provide certain automatic features `of novel construction and form for co-operation with the measuring pump decribed in my prior llFQatent No. 1,432,593, granted @ctober 17,

Anotherobject of the invention is to provide a self-service measuring` and dispensing device for gasoline and the like for use in garages and at filling stations, and to provide a device of this character which comprises but few parts so constructed that they may be made durable andpositive in action,

thereby requiring but little attention.

lnthe drawings, wherein'like symbols referv to like or corresponding parts'throughout the severalviews,

Figure 1 is a vertical section taken through fa self-service measuring and 'dispensing pump constructed according to the present invention,

Figure 2 is a side elevation'of the same, partly in section, at right angles tothe showinin Figure 1,

igure 3 is an enlarged fragmentary detail of) the coin receiving and circuit closing means,

Figure 4 is a horizontal section vtaken through the lower part of the same,

Figure 5is a detail sectional view of thev rocking measure employed.

Referring to the drawings, designates a base of -any approved construction which may be secured by anchoring bolts 11 Orthe like to a concrete foundation for rigidly and permanently supporting' the pump in proximity to a liquid-feeding pipe 12 which extends from a tank or other suitable source of liquid supply. The' base 10 is surmounted by a pillar or casing 13 of suitable coniguration and upon the upperkend of which is disposed a container 14 divided from the lower portion of the casing 13 by an inclined bottom or partition 15 leadingl to a lateral outlet 16. A -lexiblehos'e or pipe 17 is connected to the outlet 16 andas provided upon its end with a nozzle 1,8 and preferably a controlling valve 19. The container 14 is provided with a tilting'measure 20 which, as disclosed in my prior patent above referred to, hasa middle partition and -opposlte end compartments. The measure 2Q fits in a strap or framev 51, provided with pivot pins 21 at opposite sides which rock in suitable bearings in the sides of the container 14, and is limited in its rocking movements by stops 22. rlihe container 14 is provided ln one side with a channel 23 opening at its upperend into the containerV 14 at a` suitable height and which communicates at its lower end withv a drain pipe 24`extending downwardly through the casing 13 and ,base 10 into the ground,'thelpipe 24 leading back to the container or other storage device in which the bulk of the liquid is contained, thus providing an emergency overow drain.

The supply ,pipe 12 leads to a pump 25 mounted in the base 10 and connected to a motor 26 by shaft 27 or the like, the pump having an outlet feed pipe 28 which extends upwardly through the casing 13'into the container 14 and has a discharge end 29 arranged over the pivotal center of the measure 20. l

Anelectric cable 30 is led into the device, preferably through the bottom of thebase 10, and has one wire 31 leading to one terminal of the motor 26. f '.llhe other wire 32 of the cable extends upwardly through "the base 10 and is connected tova bracket 33 which supports the lower end of a coin chute -34 disposed in the casing 13 and opening at 35 through one side thereof. The bracket 33 is mounted on top of a coin box 36 secured in the casing 13 and the wire 32 is grounded through the coin chute 34. rllhe coin chute 34 isprovidedA with a depending iixed arm or finger 37 co-extensive with one edge of the coinchute, and opposite to the finger 37 is a ivoted finger 38 carried upon one arm of a Fell crank lever 39 pivoted at 40 to one side of the bracket 33. rlhe bell crank lever 39 .has a long arm which .extends horizontally ably connected thereto through the pivot 40 of the lever 39, so that the fingers 37 and 38 provide contacts in a circuit which includes the motor 26 and which is closed' by the interpositioning ofthe coin 42 between the fingers.

A releasing lever 44 is pivoted at 45 on a bracket mounted at one side of the coin box 36 and has a short arm 46 which engages beneath the outer end of the bell `crank lever 39 to normally hold the same in its lowermost horizontal position.V The outer end of the releasing lever 44 is connected to one end of a wire 47 having a casing 48 which is anchored at its lower end upon a bracket 49 carried upon the inside of the casing 13. ',Ple casing 48 extends upwardly and through the partition 15, the casing 48 terminating in a stuiling box 50 carried through the partition 15. The wire 47 extends upwardly from its casing 48 and is connected to the lower end of the frame 51 carried by the measure 20 and which is adapted to swing into and out of a substantially vertical position for moving the wire 47 downwardly to lift the short arm 46 of the releasing lever and swing the bell crank lever 39; releasing the coin 42. In vorder to .the bracket 33, the cured to an arm 52 which extends upwardly vary the position ofthe fixed linger 37 and latter is adj ustably sefrom the coin box 36 by vadjustable clamping bolts 53. l

In operation, the customer deposits a coin of the required denomination in the opening 35 and the coin drops down-through the coin chute 34 and is caught between the fingers 37 and 38. The coin 42, ash shown in Figure 3, closes a circuit through the lingers 37 and 38, which circuit includes the motor 26 so that the motor is set in opera#4 tion to drive thevpump 25 and force the liquid from the pipe l2 upwardly through the supply pipe 28 and into the bucket 20.. When the required amount of liquid xhas been deposited in one side oi the measure 20, the latter is overbalanced and the liquid is poured out into the bottom of the container 14 and is permitted to draintherefrom over the bottom 15l through the outlet 16 and flexible pipe 17. n

As the measure 20 turns over, the wire 47 is-forced downwardly to swing the releasing lever 44, and the latter by its arm 46, swings bell crank lever 39 upwardly at its long arm and releases the coin 42. The coin drops into the coin box 36 and the circuit is broken so that the motor 25 stops and the feeding of the liquid is discontinued. As shown in Figures 1, 2 and 5, the frame i. 51 has cross rods 54 in its top and bottom a to carry interchangeable and removable weights 55 to control and vary the overbalancing of the measure 20 at opposite sides of the pivots 21.

As shown in Figure 1, the right hand lease the coin, and then the wire 47 is drawn i upwardly to the left to 'release the lever y39 and permit its spring 41 returning it into the position shown in Figure 1 ready to receive the next coin. The flexible wire 47 thus trips the lever 39 upon each change of the bucket 2O from right to left and from left to right.

It is obvious that various changes and modifications may be made in the details of y construction and design of the above specifically describedembodiment of this invention without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

Having thus described my invention, what I claim and desire to secure by Letters Patent of the United States is:

l. In an automatic measuring and dispensing pump, a casing, a' container von the' casing, -a dumping bucket mounted in the casing, an 'electric circuit, an electric# controlled a liquid to said bucket, coin-operated means for controlling the circuit through said electric-controlled pump, and coin-releasing means connected to said bucket for releasing the coin and breaking the circuit upon the overthrow of the bucket.

2. In an automatic measuring and dispensing pump, a movable measuring bucket, an electric circuit,v an electric-controlled pump in said circuit for delivering the fluid to the bucket, coin-controlled means for closing the electric circuit through the electric-controlled pump to actuate the same upon the insertion of the coin, and coinreleasing means connected to the measuring bucket for releasing the coin upon the over-throw of the said bucket.

3; In an automatic measuring and dispensing pump, a pivoted bucket for receiving and measuring liquid, a coin chute for lOO receiving a coin and having electric con- 4. In an'automatic measuring and dispensing pump, a movablemeasuring receptacle, .a pump for supplying liquid to the receptacle, an electric motor connected to the pump, an electric circuit including said m0- tor, a coin chute having coin engaging contacts in said circuit, and releasing means connected to said receptacle and operable upon the dumping of the same and connected to said contacts for releasing the coin therefrom.

5. In an automatic measuring and dispensing pump, a casing, a motor-driven pump mounted in the casing, a movable measuring receptacle carried at. the top of the casing for receiving liquid delivered by said pump, a coin chute in the casing, a pair o'f contacts in the coin chute for grasping a coin delivered to the chute, an electric circuit including said contacts and said pump adapted to be closed by a coin loetween thc contacts, a releasing lever mounted in the casing for operating one of said contacts, and a connection between said releasing lever and said receptacle for operating the lever upon the movement of the receptacle.

6. In an automatic measuring and dispensing puinp, a dumping receptacle, a pump for feeding liquid to the receptacle, a motor connected to the pump, a coin chute, a pair of contacts carried by the coin chute for catching a coin delivered to the chute, an electric circuit including said motor and said contacts and adapted to be closed byv a coin between the contacts, a bell crank lever supporting one of said contacts, a spring en. gaging the bell crank lever to urge said contact toward the other contact, a releasing lever having one arm engaging said bell crank lever, and a slidable Wire leading from the other end of said releasing lever to said receptacle for actuating the releasing lever upon the dumping of the receptacle to release the coin and break said circuit.

enneonv c. Davison. 

